Maetin s



(No Model.)

M'. S. GEDARVALL.

BOLT.

No. 375,604. Patented Dec.'27,` 1887.

N PETERS, Phom-Lnhugmpher. washngtnn, D. c.

UNITED STATES PATENT CEEICE.

MARTIN S. CEDARVALL, OF PETERSBURG, ILLINOIS.

BOLT.

SPQCEE'CATION iol-ming part of Letters Patent No, 375,604, datedDecember 27, 1887.

(No model.)

To ctZZ whom, it may concern,.-

Beit known that I, MARTIN S. CEDARVALL, a citizen of the United States,residing at Petersburg, in the county of Menard and State of Illinois,have invented certain new and useful Improvements in Spring-Bolts; and Ido declare the following to be afull, clear, and exact description ofthe invention, such as will enable others skilled in the art to which itappertains to make and use the same, reference being had to theaccompanying drawings, and to the letters and ligures of referencemarked thereon, which form a p art of this specification.

My invention relates to improvements in spring-bolts; and it consists ofthe peculiar combination, construction, and arrangement of parts, aswill be hereinafter fully described and claimed.

The object of my invention is to provide a simple and inexpensivespring-bolt in which the devices for impelling and guiding the slidingbolt are compactly arranged to take up a limited space and are entirelyconcealed and protected, so that the bolt is not liable to get out oforder or subjectto atmospheric changes, and is consequently moredurable.

The boltisprovidcd with aspring-controlled dog, which automaticallydrops behind ashoulder on the sliding` bolt when the latter is retractedwithin the case or shell of the device, so that the bolt is held in itsretracted position until released, and this dog lies flush, or nearlyso, with the shell or ease at all times, and is not liable to beaccidentally struck and release the bolt.

In the acconipanying drawings, Figure l is an elevation of my improvedbolt. Fig. 2 is a rear elevation thereof. Fig. 3 is a horizontalsectional view on the line .rrr ofFig. 2, and Fig. 4. is a verticalsectional view on the line y g/ of Fig. 3.

Referring to the drawings, in which like letters of reference denotecorresponding parts in all the figures, A designates the inclosing shellor ease, which is left open at one end and therear side, as shown, andthe case is provided with integral perforated ears, through which screwsare passed to secure the same to the gate in a horizontal position. Thisshell receives a sliding bolt, B, which fits snugly therein and isadapted to enter a keeper, C.

The endwise-movable bolt is provided with a longitudinal channel orpassage, b, which is formed in the rear side thereof and opens throughthe rea-r inner end of the saine. A coiled spring, E, is fitted andhoused in the longitudinal channel in the sliding bolt, and one end ofthis spring bears against the rear closed wall of the case, While theopposite end of the spring impinges against the inner end of a fixedknob-piece, E. This knob-piece is arranged in a horizontal position, andpasses through a suitable longitudinal slot, e, that is formedhorizontally in the front wall of the shell or case A. The knob-piecethus extends beyond the shell, so that it can be grasped by the fingersand moved back and forth in the slot e, and as the knob-piece is fixedor secured in a rigid or firm manner to the endwise-movable bolt,thelatter is moved correspondingly.

A horizontal guide-rod, F, is arranged'longitudinally in the coiledspring E, and one end of this rod is fixed in the end wall of the shell,while the other end of the rod passes through a suitable aperture thatis formed in the extended inner end of the knob-piece E', so that as thebolt slides back and forth the knob-piece rides over the guide-rod.

A longitudinal slot, g, is formed in the upper wall of the shell or caseabove the sliding bolt B, and in this slot is arranged a horizontal dogor pawl, G, that lies flush with the upper surface of the' upper wall,or nearly so, as shown. This dog is pivoted at an intermediate point ofits length'on a suitable fixed pin or shaft, g', and it is provided atopposite ends with oppositely-extending lips or shoulders h 7L', one ofwhich, h, extends upwardly from the dog and beyond the shell or case, sothat the thumb or finger can be applied thereto to depress one end ofthe dog, and the other lip or shoulder, h', extends downwardly towardthe sliding bolt. The end of the dog having the downwardly-projectinglip or shoulder h is normally depressed toward the sliding bolt by meansof a spring, I, so that the lip is forced behind a shouldeiyj, that isformed at a suitable point on the sliding bolt. The spring is made of aHat piece of metal and arranged close against the shell or case, and ithas one end secured to the shell, and the other end is fitted beneaththe free end of the dog to depress the other end.

IOO

The operation of my invention is obvious. The bolt, when released fromthe dog, is normally expelled beyond and through the open end of thecase or shell, so that when the gate is closed the bolt enters thekeeperto prevent the gate from swinging open. To withdraw the bolt 'from thekeeper it is only necessary tograsp the knob-piece by hand and move thesame rearwardly, thereby forcing the bolt into the shell against thetension or pressure ofthe coiled spring. As the bolt is retracted whollywithin the case, the shoulder or lip j thereon comes opposite the lip hon the dog, which is iinpelled downwardly by its spring, so that the twoengage, and thus prevent the bolt from being projected beyond the shelluntil the dog is released, which can be readily accomplished by pressingon the shoulder h to elevate the depressed end ofthe dog and with` drawits lip h from engagement with the bolt, the latter being automaticallyexpelled by the coiled spring.

It will be observed that the coiled spring and the gnide-rod are housedwholly within the longitudinal recess or channel in the sliding bolt,and that the bolt itself is inclosed in a solid case, whereby the partsare wholly concealed and protected from the weather. The parts arecoxnpactly arranged and take up very little space, and the device as awhole is sirnple and durable in construction, effective in o'peratiomandcheap.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. The herein-described spring-bolt, consisting of a slotted shell orcase, a longitudinally-recessed bolt therein, a guide-rod arranged inthe recess of the bolt and fixed to the shell or case, aspring-controlled dog for holding the bolt retracted within the case, acoiled spring around said guide-rod, and a knob passing through the slotin the case and through the bolt, and having its inner end iitted on theguide-rod to slide freely thereon, whereby the knob is 'connected to thebolt to control the latter independent of separate fastening devices, asand for the purpose described.

2. A spring-bolt comprising a slotted shell u or case, a sliding bolttherein having a shoulder,j, and a longitudinal channel or recess, aspring housed in the channel of the bolt, a knob passing through thecase and connected tothe bolt, a pivoted dog fitted in one of the slotsof the case and having a lip adapted to engage the corresponding lip onthe bolt when the latter is retracted in the case, and aspring bearingagainst the dog, substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.MARTIN S. GEDARVALL. Vitnesses:

L. F. GRAMLIOH, GEORGE G. FREEsE.

